Seat connecting device for school furniture



A ril 30,1935. F, G YAWMA'N' 1,999,949

SEAT CONNECTING DEVICE FOR SCHOOL FURNITURE Original Filed June 1, 1931 Patented Apr. 30, 1935 {UNITED STATES SEAT CONNECTING DEVICE FOR SCHOOL FURNITURE Frederick G. Yawman, Rochester, N. Y.

June 1, 1931, Serial Divided and 1934, Serial No- 736,25

Original application PATENT- OFFICE this applicationJuly 20,

3Claims. (ci us-"77y The present application is a.'division of an ap plication filed by me June 1, 1931, Serial No.

invention relates tothe novel means for con necting the seat to its support.

The object of the present invention is to ima vertical axis and also tilted backwardly and With these and other objects in view, the invention consists in the construction and novel combination and arrangement of parts hereinclaims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing:-

gure 1 is a side elevation of a portion of a Fi seat provided with means constructed m accordance with this invention for connecting the seat to its support.

seat support and the connecting means for securing the seat to its support.

Fig. 3 is a reverse plan View of the connecting Fig. 5 is a top view of the desk at the top of the seat support.

Fig. 6 is a plan view of the wear plate between the disks.

has a disk 39 welded to the connection portion of the U-shaped member, while the seat 31 has a diskAD-rigidly secured to the under side thereof. These disks are bothmade of sheet metal and cular portion 4| and the lower disk 39 has an upwardly pressed circular portion 4!. These circular portions 4 I form circular ribs which provide bearing surfaces for the disks and space the body of the U-shaped member. Below the latter it is surrounded by a coiled spring 44 which at one tion of the upper disk 40 separates from the front portion of the lower disk 39 in the tilting movement of the seat.

forming circular bearing surfaces and defining a central space, a central pivot pin connecting the disks and permitting a turning movement of the upper disk and seat, spring means acting on the pivot pin to permit the upper disk to tilt, said upper disk in its tilting movement fulcruming on the pressed portionof the lower disk at the back thereof and at a point spaced from the pivot pin, and. normally spaced stop plates secured respectively to the upper and lower disks and located in the central space defined by the pressed portionsof the disks, said stop plateslimiting the turning movement of the upper disk and seat in both die rections. A

2. The combination with a seat and'a support, of upper and lower spectively to the seat tion and the lower disk having an upwardly pressed annular portion, said pressed annular p01"- tions forming circular'bearing; surfaces and defining a central space, a; central pivot pin connecting the disks and permitting a turningmovement of the upper disk 'andseat, spring means acting on the pivot pin to permittheupperdisk to horizontal disks secured re and'thesuppOrt, they upp rf disk having a downwardly pressed annular por' tilt, said upper disk in its tilting movement fulcruming on the pressed portion of the lower disk at the back thereof and at a point spaced from the pivot pin, and normally spaced arcuate stop plates secured respectively to the upper and lower 5 disks and arranged in said. central space and having terminal portions deflected approximately at right angles and arranged to engage each other to limit the turning movement of the upper disk and seat in both directions.

3. The combination with a seat and a support, of upper and lower' horizontal disks secured respectively to the seat and the seat support, the upper disk havinga downwardly pressed annular portion and the lower diskhaving an upwardly pressed annular portion, said pressed portions forming circular bearing surfaces and defining a central space; a ring interposed between the circular bearing surfaces of the pressed portions and secured to one of the pressed portions and provided with lubricant receiving openings, and spring means acting on the pivot pin to permit the upper disk to tilt.

FREDERICK G. YAWMAN. 

